Update decimal test data to the most recent set from Mike Cowlishaw.
diff --git a/Lib/test/decimaltestdata/minus.decTest b/Lib/test/decimaltestdata/minus.decTest
index 1961456..17749c0 100644
--- a/Lib/test/decimaltestdata/minus.decTest
+++ b/Lib/test/decimaltestdata/minus.decTest
@@ -17,7 +17,7 @@
-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
-- mfc@uk.ibm.com --
------------------------------------------------------------------------
-version: 2.58
+version: 2.59
-- This set of tests primarily tests the existence of the operator.
-- Subtraction, rounding, and more overflows are tested elsewhere.